Question

1. x + 3y = 1 - 3x – 3y = -15​

Answer 1

x = 7, y = -2

Explanation:

hey i assume those are two different equations

(x + 3y = 1) 3

-3x - 3y = -15

3x + 9y = 3

add both equations in elimination method

6y = -12, y = -2

x + 3(-2) = 1

x + -6 = 1, x = 7